Tool for applying bands to conduits



I c. G. coQPER TOOL FOR APPLYING BANDS TO connuns Filed Sept. 12, 1952Dec. 14, 1954 INVENTOR.

C HARLELS G. COQPER ATTORNEYS United States Patent Ofitice TOOL FORAPPLYING BANDS TO CONDUITS Charles G. Cooper, San Francisco, Calif.

Application September 12, 1952, Serial No. 309,343

3 Claims. (Cl. 81-9,3)

The-present invention relates to. improvements over the band-Windingtool disclosed in my copending application, .Serial No. 168,470, filedin the United States Patent Dflice on-June 1.6, .1950, and nowabandoned.

An object of this invention is to provide a tool for applying astrip-like band to a conduit, regardless of the width of the band. Forexample, the applied band may .form a clamp for securing a couplingmember to a: hose; :and, although the width of this band may vary inaccordance with the requirements, the toolstill may banned for applyingthe hand.

More particularly described, it is herein proposed to provide a tooladapted :for wrapping a strip-like band around a conduit with facilityand ease, with the band overlapping itself. The band is firmly held inplace while the layers .of the overlapped portions are secured'together.

As a still further obiect it isproposed to utilize a strip-like bandhaving a preformedoffset extending len thwise thereof, with this offsetdefining a groove in one face ofthe band and a projecting rib on itsopposing face. In thisconnection, the tool is provided withbandembracing jaws, which have ribs arranged to enter the grooves of theband to thereby guide the jaws as the latter are rotated about theconduit during the application of the band, forcing the rib of one layerof the band into the groove .of the adjacent-underneath layer.

Moreover, it is proposed to provide a tool of the character described,which is simple in construction, durable and efiieient for 'thepurposeintended.

Other objects and advantages will appear as the spoolfication continues.The novel features will be set forth in the claims hereunto appended.

Drawings For a better understanding of this invention, reference shouldbe had to the accompanying drawing, forming part of this application, inwhich:

Figure l is a side elevation view of my band-applying tool, with thejaws thereof separated and positioned on opposing sides ofa conduit, andillustrating a band partially wrapped around the latter;

Figure 2 is a similar view, but disclosing the band completely wrappedabout the conduit;

Figure 3 is a top plan view of Figure 2;

Figure 4 is a vertical transverse sectional view taken along the planeIV-IV of Figure 1;

Figure 5 is an enlarged longitudinal sectlonal view taken along the lineVV of Figure 2; and

Figure 6 is a perspective view of the strip-like band that I employ.

While I have shown only the preferred form of my invention, it should beunderstood that various changes, or modifications, may be made withinthe scope of the annexed claims, without departing from the spiritthereof.

Detailed description Referring now to the details, I have shown aconduit indicated generally at A, which may be a hose by way ofillustration. Moreover, a coupling member B has been selected forpurpose of disclosure, with its tubular sleeve 10 telescoped into thebore 11 of the conduit. Of course, I do not desire to be limited to sucha conduit and coupling member.

It will be noted that I provide a band-clamp C, which is fashioned froma metallic strip 12 of the shape shown in Figure 6. This strip ispreformed with an offset ex- Patent d Dec. .14, 1954 tending lengthwisethereof,--with :this offset defining a groove 14 in one face thereof and.a projecting rib :15 on its opposing face.

Upon wrapping the band strip 12 around the conduit A, the rib 1-5 isplaced against this conduit. As the strip is Wrapped until it overlapsitself, as shown in Figures 2 and 5, the rib 15 of one layer enters thegroove 14 .of the adjacent underneath layer of the band.

In Figures 1 and 6, the end 12a of the band strip has been disclosed ashaving a series'of projections 16, which may be pressed into the wall ofthe-conduit A. This will prevent the band from slipping relative tothe-conduit as the band strip is wrapped around the latter.

After the strip has been completely wrapped about the conduit A, a punchmay be utilized to make holes through the strip near the free end 12!)thereof so that a staple 17 maybe driven through the layer of the bandstrip and into the wall of. the conduit. It will be appreciated, ofcourse, that a small ,nail, screw, or other suitable fastening means maybe employed ,for anchoring the strip in place.

In the event that the staple 17 is :used, the legs 17;: may be longenough so as to strike the tubular sleeve 14), and thereby cause thelower ends of these legs to spread in opposite directions, as suggestedby the dotdash lines in Figure 2. The cross-bar 17b of the staple may beaccommodated in the groove 14 of the outermost layer of the band strip(see Figure 3).

As shown in Figures 1 to 4, inclusive, ,rny band-applying tool includesa pair of .coacting jaws D and E, which are adapted to be positioned onopposing sides of the conduit A, with the strip 12 .being interposedbetween theqjaws and the conduit. it will be seen that the jaws D and E,are fashioned with concaved inner faces 18 and 19, respectively, whichconfront one another and are adapted to embrace the band strip 12 whenthe jaws are moved toward each other.

q-M-oreover, the confronting faces 18 and 19 of the two jaws .areprovided with vertically-arranged ribs 24 and 21, respectively, whichproject therefrom and are located to enter the outermost groove 14 .ofthe band strip. This construction will guide the jaws as the tool isswung in a counter-clockwise direction about the axis of the conduit A,thus retaining these jaws against slipping laterally as they are rotatedaround the conduit. As clearly shown, these ribs extend lengthwise oftheir respective jaws; and, accordingly, will be disposedcircumferentially relative to the interposed conduit. Moreover, the rib20 on the fixed jaw D extends adjacent to, beneath and beyond the lowerend of the rib 21 on the movable jaws E. 4130th ribs are disposed in thesame plane (see Figure In order to accommodate the tool to differentwidths of band strips, the concavity of each band-embracing face isuniform from its rib to the opposing lateral sides 22 of the jaws D andE. Thus the strip 12 may extend beyond the jaw sides withoutobstruction. This is an important structural feature of the tool.

For the purpose of guiding the jaws toward and away from one another,the jaw D has been made with a barlike portion 23, which extends througha bifurcated lower end 24 of the movable jaw B (see Figure 4). A lug 25projects upwardly from the outer end of the bar-like portion 23, and hasa rod 26 threaded therethrough. The inner end of this rod has a head 27thereon, which is rotatably anchored in a socket 28 formed in the innerface of the jaw E (see Figures 1 and 4).

In order to turn the rod 26, and thereby advance or retract the jaw Erelative to the jaw D, a handle 29 is fixed to the outer end of thisrod. Furthermore, this handle may be utilized for swinging both of thejaws axially around the conduit A to wrap and compress the stripthereagainst (see Figure 2). Of course, the jaws D and B may be movedtoward each other by merely turning the screw 26 as the band strip isapplied so as to place the latter under the desired compression.

Subsequently, the legs of the staple 17 may be driven through holespunched in the superimposed layers of the band strip. Both the steps ofpunching thes holes and driving the staple m y be facilitated by placingthe fiat underneath surface 23a of the bar-like portion 23 against asupport 30 (see Figure 2). to serve as an anvil.

The jaws D and B have free upper ends 31, which are separated from oneanother when these jaws embrace the clamp band C, thereby providing aspace through which the fastening means, such as the staple 17, may beinserted to anchor the wrapped band to the conduit. It will be notedthat the upper end of the jaw E is fashioned with a notch 32 therein topermit a staple, or the like, to be inserted between the jaws when thelatter are applied to relatively small conduits.

Thus the jaw D is made Summary The operation of my tool for applying aband to a conduit is summarized briefly as follows: 7

Assuming that the tubular sleeve 10 has been inserted into the bore 11of the conduit A, then the strip 12 is wrapped partially around theconduit, with the projections 16 being pressed into the wall of theconduit to prevent the strip from slipping and with the rib facingtoward the conduit. Now the conduit and partially-applied band strip areintroduced between the jaws D and E in the manner illustrated in Figure1.

Next, the handle 29 is rotated so that its screw 26 will draw the jawsup against the strip. By revolving the entire tool about the axis of theconduit A in a counterclockwise direction in Figures 1 and 2, the bandstrip will be wrapped tightly upon the conduit, the ribs 20 and 21 ofthe jaws riding along the groove 14 of the strip to thereby guide thejaws as they move around the conuit.

After the band strip has been wrapped, as shown in Figure 2, thebar-like portion 23 of the jaw D may be placed against a suitablesupport 30, and punch holes made through the superimposed layers of thisstrip. Thereupon, the legs 17a of the staple 17 may be driven throughthese holes to anchor the strip in final position upon the conduit, withthe cross-bar 17b of the staple being accommodated in the groove 14 ofthe band strip.

Thereafter, the tool may be released from the conduit A and the appliedband-clamp C by merely turning the handle 29 so as to separate the jawsDE, and then disengaging the tool. Quite obviously, these jaws have beenshaped to accommodate conduits of various sizes and band strips ofdifferent widths.

I claim:

1. In a tool for applying a strip-like band of the character describedto a conduit: a pair of coacting jaws having concaved band-embracingfaces disposed in confronting relation with each other; means for movingthese jaws toward and away from one another, and for rotating the jawsabout a conduit; each jaw being provided with a vertically-arranged ribon its concaved face, which projects therefrom towards the other jaw;the ribs extending lengthwise of their respective jaws; and both ribsbeing disposed in the same plane.

2. In a tool for applying a strip-like band of the character describedto a conduit: a pair of coacting jaws having concaved band-embracingfaces disposed in confronting relation with each other; means for movingthese jaws toward and away from one another, and for rotating the jawsabout a conduit; each jaw being provided with a vertically-arranged ribon its concaved face, which projects therefrom towards the other jaw;the ribs extending lengthwise or" their respective jaws; both ribs beingdisposed in the same place; each jaw having opposing lateral sidesbetween which its rib is arranged; and the concavity of eachband-embracing face being uniform from the rib thereon to the opposinglateral sides of itsjaw.

3. In a tool for applying a strip-like band of the character describedto a conduit: a pair of coacting jaws having concaved band-embracingfaces disposed in confronting relation with each other; means for movingthese jaws toward and away from one another, and for rotating the jawsabout a conduit; each jaw being provided with a vertically-arranged ribon its concaved face, which projects therefrom towards the other jaw;the ribs extending lengthwise of their respective jaws; both ribs beingdisposed in the same place; one of the jaws being slidably guided forrectilineal movement on the other jaw; the rib on the latter jawextending adjacent to, beneath and beyond the lower end of the rib onthe slidable jaw.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,696,194 Foreman Dec. 25, 1928 FOREIGN PATENTS Number CountryDate 162,466 Austria Aug. 15, 1948

